38730861 has 24 divisors (see below), whose sum is σ = 60820760. Its totient is φ = 23607936.

The previous prime is 38730851. The next prime is 38730877. The reversal of 38730861 is 16803783.

It can be written as a sum of positive squares in 4 ways, for example, as 8590761 + 30140100 = 2931^2 + 5490^2 .

It is not a de Polignac number, because 38730861 - 2⁵ = 38730829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38730841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11235 + ... + 14271.

Almost surely, 2^38730861 is an apocalyptic number.

It is an amenable number.

38730861 is a deficient number, since it is larger than the sum of its proper divisors (22089899).

38730861 is a wasteful number, since it uses less digits than its factorization.

38730861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3165 (or 3162 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 38730861 is about 6223.4123276543. The cubic root of 38730861 is about 338.3392512467.

The spelling of 38730861 in words is "thirty-eight million, seven hundred thirty thousand, eight hundred sixty-one".